Internal-combustion engine



A. E. OSBORN.

|NTENNAL comusloN ENGlNE.

APPLICATION FILED FEB. 25, 1920.

1,41 1 ,064. Patented'Mar. 28, 1922.

Swoon/to@ I gx/J foto/ww @M UNITED STATE/S,

` AlALBEN Eli(asistirn, or-nnwioax, n. .YQ

'iIINrnRArg-ooiitusrron ENGINE.

specification, reference being had to the accompanying drawing, forming a part thereof.

My present invention relates particularly to engines of the type disclosed in my Patents 1,212,391 and 1,315,192 j,wherein the functions of the engine are controlled kby a reciprocating piston valve.

One of the general objects of my invention is to improve engines'of this type and particularly to secure greater eiliciency and added power. n

An important feature of the invention is the provisionof the piston valve which controls the functions of the engine with a valve, which may be of the poppet-type and which will operate automatically as an auxiliary inlet for the gas.

Other features of the invention will appear as the specification proceeds.

In the drawing accompanying and form ing a part of this specification, I have illus` trated the invention embodied in engines of the type disclosed in thetwo patents referred to, but would have it understood that the invention is not limited in Vits adaptation to these two particular engines, and further,

that various modifications maybe made` without kdeparture from the spirit and scope ofthe invention as covered in the appended claims.

Figure 1 is a vertical 'sectional View of the invention as incorporated in an engine of the single inlet port type disclosed in my Patent #1,212,391. i

Figure 2 is a similar view of the invention as applied to an engine of thedouble inlet port type disclosed in my Patent #1,315,192.

Figure 3 is aV horizontal sectional view of the piston valve as taken on substantially the plane of line 3 3 of Figure 1.

In the illustrations, 5 designates the engine cylinder within which operates a piston 6 connected by a connecting rod 7 with the crank shaft 8. l

In the rst form shown, the cylinder is provided with a single intake port 9 located near the end of the outward stroke ofthe Application med'retmary 25,1920.- semina. 161,294.4

ltubular' construction, havingfan `inlet" port speiacaaonpfiettrsrteaa PatenterdfMar. 28,119.22.

ffpis'ton i and :'controlled'. byy a` piston valve V10 'ireciprocating in a" 'cylindrical valve `seat ll whichfisopen at 'itslupp'er'end to the 'com- Y blustion"chamber,' This ,piston J valve is of 12 in one side thereof to registerwitlra sup# iply' 'rp`assagef 'and having' anffoutlet port 14 1n the opposite side thereof to registery with the cylinder port 9. The exhaust port 15 ofthe engine is controlled bythe head of thel piston valve which is designed to traverse the same.

Mounted in the head of the piston valve is an automatic valve illustrated as a poppet lvalve`16, said Vvalve being normally held to its seat by a spring 17. f This automatic 'valve Irhave shown as mounted in and carried by a valve cage 18 carrying a seat for the valve 16 and sleeved into the upper end of the tubular piston valve.

The poppet valve cage is shown detachably secured in its seat in the upper end of the piston valve by bolts 19 extending between the lugs 20 on the opposite inner side vwalls of the tubular piston valve and lugs 21 provided inthe lower end of the valve cage. By this disposition of the securing bolts and lugs, the passage through the piston valve is not restricted to any appreciable extent and this arrangement also brings the securing nuts 22 on the lower ends ofV the bolt rods 19 into position where they can be readily reached through the inlet port inthevouter side of thepiston valve.

The second form of the invention differs from the one just described, principally in that the cylinder is provided with two intake ports 23 and 24 separated longitudinally, but both disposed toward the outer endV of the piston stroke.

- In the operation of the engines described,

on the vintake stroke of the piston the ports in the piston valve are brought into register with the cylinder ports and when the inside cylinder port is uncovered by the piston, the charge is admitted to the cylinder above the piston. 1 During the suction stroke and before the cylinder port or ports are opened by the piston, a partial vacuum is created in the. cylinder which opens the poppet valve and admits a supply of the intake gas directly into the head of the cylinder, such amount depending on the suction, the adjustment of the spring tension and other controlling factors, This action has the ef- Y feci;v olf relieving or partially vacuum, thereby taking some of the load 'oif relieving the the piston and also produces va more complete charge vin the cylinder, What I claim is:

Y -tubular piston valve, a valve Cage seated `in thel end of said piston valve, a pqppetrevalve ff Vmounted insaid valve cage, lugs on the op- 10 ,positeinneriwalls'of the tubular piston valve and securing,boltsv extending between. said lugs andy the val-ve `cage to removably .fse-

cure `said valve'ea'ge "and the poppet valve mounted' therein yin place in vthe end of -the 15 piston-valve. Y v

2. In v an. mternal combustlqn englne, a e l v cylinder having a seat fora piston valve n open at one end to the interior of the eyln- Y said'eylinder having an intake port dis-Y .posed toward the end of the outsbr'oke of the piston, v 1. In an internal combustion engine, a

a piston valve operating in the piston seat and 'controlling the cylinder port, said piston valve being of tubular'construction .vand'havingv a passage extending up through the end thereofvvhich is open to the inside of the cylinder and.V a pressure controlled -valve carried .by-.the piston valveand vgoverning said passage.

Y' yIn vWitness VWhereol` have `my hand this 20th dey ofFebruary, 1920.y

' `A, ofsfBoRNQ 

